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MakcuM [25]
2 years ago
6

Why do cells need to regulate what goes in and out of them?

Biology
1 answer:
kap26 [50]2 years ago
5 0

Answer: These molecules are essential for living things. The cell membrane controls what goes in and out by having protein channels that act like funnels in some cases and pumps in other cases. Passive transport does not require energy molecules and happens when a funnel opens in the membrane, letting molecules flow through.

Explanation: Hope this helps :)

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Which vector contained the infectious agent, Yersinia pestis?​
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Answer:

Yersinia pestis is the causative agent of plague

Explanation:

Rodents, such as rats, carry the disease. It is spread by their fleas.

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What part of the cardiovascular system is responsible for the one-way flow of blood through the chambers of the heart?
Ilya [14]
It would be the atria i think

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Which phrases describe air pressure? Select three options.
9966 [12]
  • decreases as altitude increases
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Pressure is the force exerted, by a substance, per unit area.

Explanation:

Pressure is given by the formulae;

P = F/ A

Whereby;

P = pressure

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A = area

Remember that ..

F = Ma

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M = mass

a = acceleration

Therefore pressure can be given as;

P = Ma / A

The mass of the above column of a substance multiplied by the acceleration due to gravity = pressure exerted by the substance.

Learn More:

For more on pressure check out;

brainly.com/question/13363709

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7 0
3 years ago
Read 2 more answers
Will heterozygous genotypes have the same phenotypes as homozygous dominant alleles?
Dahasolnce [82]

Answer:

For a gene that is expressed in a dominant and recessive pattern, homozygous dominant and heterozygous organisms will look identical (that is, they will have different genotypes but the same phenotype), and the recessive allele will only be observed in homozygous recessive individuals.

Explanation

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The parasympathetic division of the somatic nervous system is active when the body is at rest.
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This is true. I hope this helps
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